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Anton [14]
2 years ago
12

A grocer wants to mix a type of spice which costs £22 per kilogram with another type

Mathematics
1 answer:
AfilCa [17]2 years ago
8 0

Answer:

60

Step-by-step explanation:

let a = 22 / kg, and b = 12 / kg

a + b = 20 kg

22a + 12b = 15 * 20

12a + 12b = 240

10a = 60

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Which set of ordered pairs represents a function? {(0, 1), (1, 3), (1, 5), (2, 8)} {(0, 0), (1, 2), (2, 6), (2, 8)} {(0, 0), (0,
11111nata11111 [884]

Answer: {(0, 2), (1, 4), (2, 6), (3, 6)}

Step-by-step explanation:

For a relation to be considered a function, each x-value needs to have one corresponding y-value--it cannot have more than 1.

Since all the other sets of ordered pairs feature points with two x-values with different y-values, the set above is the only function of the provided options.

4 0
2 years ago
PLEASE HELP!!! ILL GIVE AS MANY POINTS AS YOU WANT!!! PLEASE!!
lozanna [386]

1: y=8, (-2,8)

2: y=6, (-1,6)

3: y=0, (2,0)

Step-by-step explanation:

Insert the x value into each equation then see what value of y that you need to get 4 on the right hand side of the equation.

6 0
2 years ago
Which of the following shows the least expensive unit price?
Arlecino [84]
It would be the first one because each orange costs $0.34
3 0
2 years ago
Read 2 more answers
2. to which subsets of real numbers does number -22 belong? choose all subjects that apply A) Whole numbers B) Rational numbers
nexus9112 [7]
-22 belongs to Integers
3 0
2 years ago
4x^2+2xy-10y^2+9=0 what is the value of a,b,c and the discriminant?
zavuch27 [327]

basically you treat y like a number and not a variable

Answer:

a is 4

b is 2y

c is -10y²+9

discriminant is 4(41y²-36)

Step-by-step explanation:

4x²+2xy-10y²+9=0

rewrite in standard form of a quadratic equation like ax² + bx + c = 0

4x²+2yx-10y²+9=0

basically you treat y like a number and not a variable

a is the number with the x²

right away we know a is 4 because of 4x²

b is the one with x so in this formula b is 2y

c is the number without the x which in this case is -10y²+9

discriminant is

b² - 4ac

(2y)²- (4)(4)(-10y²+9)

4y²-(16)(-10y²+9)

4y²-(16)(-10y²+9)

4y²+160y²-144

164y²-144 =

4(41y²-36)

6 0
2 years ago
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